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| -rw-r--r-- | content/en/docs/Concepts/problem_osi.md | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/content/en/docs/Concepts/problem_osi.md b/content/en/docs/Concepts/problem_osi.md index 2d09102..204d773 100644 --- a/content/en/docs/Concepts/problem_osi.md +++ b/content/en/docs/Concepts/problem_osi.md @@ -127,9 +127,11 @@ QUIC runs on top of UDP. If UDP is Layer 4, then what layer is QUIC? One could argue that UDP is an incomplete Layer 4 protocol and QUIC adds its missing Layer 4 functionalities. Fair enough, but then what -is the minimum functionality for each of the protocols? Layer 2 -protocol? What is the minimum function of a Layer 3 protocol? And a -Layer 4 protocol? +is the minimum functionality for a complete Layer 4 protocol? And what +is a minimum functionality for a Layer 3 protocol? What have IP, ICMP +and IGMP in common that makes them Layer 3 beyond the arbitrary +concensus that they should be available on a brick of future e-waste +that is sold as a "router"? #### Which protocol fits in which layer is not clear-cut. @@ -153,13 +155,14 @@ are set in stone. ### Are these issues _really_ a problem? -Well, in my opinion: yes! These models have no predictive value and -don't even fit with observation of the real-world Internet most of us -use every day. They are about as arbitrary as a seven-course tasting -menu of home-grown vegetables. Their only uses are as technobabble for -network engineers and as tools for university professors to gauge -their students' ability to retain a moderate amount of -pseudoscientific dribble. +Well, in my opinion: yes! These models are pure [rubber +science](https://en.wikipedia.org/wiki/Rubber_science). They have no +predictive value, don't fit with observations of the real-world +Internet most of us use every day, and are about as arbitrary as a +seven-course tasting menu of home-grown vegetables. Their only uses +are as technobabble for network engineers and as tools for university +professors to gauge their students' ability to retain a moderate +amount of stratal dribble. If there is no universally valid theoretical model, if we have no clear definitions of the fundamental concepts and no clearly defined |